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(fl J 7 I P R. ssneenssneet'l. a DAMPER REGULATOR.

NO. 591,562. Patented 0013'. 12, 1397.

WITNESSES IN'VENTOH.

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1". 1 MUELLER. DAMPER. REGULATOR.

No. 591,562. Pate nted 001;. 12,1897.

7 M rpfi INVENTOH A 77' OHNE Y.

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FREDERICK T. MUELLE OF NEW YoRK, N. Y.

DAM PER-REGU LATO R.

SPECIFICATION forming part of Letters Patent No. 591,562, dated October 12, 1897.

Application filed June 17, 1897.

To all whom it may concern:

Be it known that I, FREDERICK T. MUEL- LER, a citizen of theUnited States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Damper- Regulators, of which the following is a specification.

My invention relates to an improvement in damper-regulators, the object of the same being to provide a device of this'kind or char acter which will operate instantly and in accordance with a very slightv increase or decrease of pressure in the steam-boiler, and while very sensitive in its operations yet at the same time be durable in use.

With these andother ends in view my invention consists in the combination of a motor for operating a damper, a valve for controlling the motor, and a movable support provided with a chamber containing a diaphragm, which latter, when acted upon by the pressure in the steam-boiler, will raise the support and actuate the valve.

My invention further consists in certain .novel features of construction and combinations of parts, as will be hereinafter fully described,'and pointed out in the claims.

'In the accompanying drawings, Figure 1 is aviewin side elevation of my improved regulator attached to a damper. Fig. 2 is a plan view thereof, the flue'and damper being omitted. Fig. 3 is a vertical sectional view taken on the line 3 3 of Fig.2. Fig. 4 is a crosssection taken on the line {i 4 of Fig. 3. Fig. 5 is a sectional view of the diaphragm and adjoining p'arts, taken on the line 5 5 of Fig. 2. Fig. 6 is a detached plan of the movable support provided with a diaphragmchamber. Fig. 7 is a sectional View of the valve-chamber, taken on the line7 7 of Fig. 9, and showing the valve in its lowered position. Fig. 8 is a similar view-showing the valve in its raised position. Fig. 9'is a cross-sectional view of the valve-chamber, taken on the line 9 9 of Fig. 7. Fig. 10 is a View of a modification whereinthe movable support for the diaphragm is linked directly to the valvestem. Fig. 11 is a view of a modification showing the substitution of a piston for a V flexible diaphragm.

Referringto the drawings, 1 represents a Serial No. 641,090. (No model.)

cylinder of any suitable size and dimensions,

shoulder 4, formed on the inner surface of the cylinder 1, and at its lower end against the shoulder 5, also formed on the inner surface of the cylinder 1, this construction and arrangement of parts leaving a space 6 between the outer surface of said inner cylinder. 3 and the inner surface of the cylinder 1.

Into the cylinder 1 and near its lower end leads a pipe 7 from the valve-chamber 8, and in the upper end of the cylinder 3 is formed an opening 9, allowing of the ingress of water or steam from the valve-chamber 8 into the outer cylinder 1 through the pipe 7 and into the inner cylinder 3 through the opening 9.

Within the inner cylinder 3 is fitted a vertically-moving piston 10,the piston-rod 11, secured thereto, passing-through the top plate or cover 12 of the cylinder 1 andthrough the stuffing-box 13, secured to the latter, the upper end of said piston-rod being provided with a hook 14, to which is attached one end of a chain or rope 15,passing over the pulleys 16, the other end of said rope or chain being connected to the outer end of a crank or lever 17, which latter in turn has its inner end secured to a shaft 18, fitted in the flue 19, and on which shaft the damper 20 is rigidly mounted, the outer end of said lever 17 being provided with a weight 21, the purpose and function of which will be hereinafter explained.

8 represents a valve-chamber connected to the cylinder 1 by the pipe 7 and into the end of which is threaded a nut 22, provided with a valve-opening 23, leading into the passage 24, which latter leads into the valve-chamber 8, the lower end of said latter having threaded therein a similar nut 25, provided with the valve-opening 26, leading into the passage 27, which latter also leads into the valve-chamber 8.

The valve-chamber 8 is preferably cast or otherwise formed of two parts, which when properly placed are bolted or otherwise securely fastened together, the vertical'portion of said chamber 8 having formed thereon a horizontal wall 23, to which is bolted or otherwise secured a plate 29, forming a horizontal chamber 30, opening into and communicating with the vertical chamber, said plate 28 having mounted therein a rod or shaft 31, as shown in Fig. 9, to one end of which is secured a crank 32, the free end of the latter loosely fitting in an opening in the verticallyacting valve 33, it being evident by reference to Figs. 7, S, and 9 that when the shaft 31 is rocked the lever 32 will be raised and lowered, causing the valve 33 to accordingly open and close the valve-openings 23 and 26,formed in the hollow nuts 22 and 25, respectively.

Into the nut 22 is threaded one end of an inlet pipe 34, which communicates with a suitable source of water-supply under pressureas, for instance, the city-main, an elevated reservoir, tank, the-and into the lower nut is threaded one end of an outlet-pipe 35 for conducting the water from the cylinders to some convenient or suitable place of discharge.

On the cylinder 1 is formed a bracket or stud 36, to which is secured, by means of bolts 37, the bracket 38, provided on its ends with the bearings 39, in which latter is mounted a shaft 40, preferably of the form shown that is, triangular in cross-section-in order that it may rest and move on the sharp edge in order to lessen the friction between the parts as far as possible. On the shaft is secured the movable diaphragmsupport 41, the form or contour of which is shown in Fig. 6, said support being provided with the arms 42 011 one side thereof and having its central portion dished or hollowed out, as shown at 43, a passage-way 44 being formed diametrically through the support and communicating with the chambered portion 43 by means of the opening or passage 45, one end of said passage 44 being closed by a nut or plug 46 and the opposite end 47 having threaded therein one end of a pipe 43, preferably made of flexible material and leading from the steam-boiler, (not shown,) said supportbeing also provided with an arm 49, extending outwardly from the central portion thereof.

To the bed-plate 2 is secured the standard 50, the upper end being provided with the arms 51, (shown in cross-section, Fig. 4,) between which the outer free end 49 of the support 41 moves and by means of which it is guided, screws or bolts 52 being provided for the purpose of limiting the vertical travel of said arm 49.

To the under side of the support 41 is pivotally secured the upper end of the pitman 53, the lower end of the latter being secured to the outer end of the crank 54, the inner end of the latter being tightly secured to the outer end of the shaft 31, it being evident from the foregoing that when the support 41 is raised or lowered the shaft 31 will be rocked through the medium of the pitman 53, thus causing the inner free end of the crank 32 to be raised and lowered, which in turn raises and lowers the valve 33, as before described.

In practice the lever or crank 54 is made of the same length as the lever 32, the result being that the valve 33 will be raised or lowered to the same extent as that of the pitman 53 and to the same extent as the diaphragmsupport 41 is raised or lowered.

In the chamber or hollowed-out portion 43 of the support 41 is located a diaphragm 55, constructed of rubber or other suitable material, the edge of which is held or clamped in place by means of the flange 56, formed on the top 01' cover 5'7 of the chamber, which is bolted to said support, said chamber 43 below the diaphragm being filled with water, as shown in Fig. 3. \Vithin the diaphragmchamber and on top of the diaphragm 55 rests a piston 58, the stem or rod 59 of which passes through the cover 57 and has supported in the upper notched end thereof the lever 60, one end of the latter being provided with triangular studs 61, which fit under and rest against the curved ends 62 of the vertical arms 63, formed on the cover 57, said lever being provided in its length with a ring 64, which encircles the cylinder 1, the inner end 65 of said lever 60 having pivotally secured thereto the upper end of the connecting-rod 66, the lower end of the latter being secured to the bed-plate 2 or other stationary support.

In practice the arm 49 of the support 41 has secured thereto a weight 67 for the purpose of holding or retaining the device stationary or inoperative until the steam-pressure in the boiler reaches a certain degree. Any increase of pressure over the desired point will be transmitted through the pipe 48 to the water in the lower portion thereof and to the water in the chamber 43, whereupon the increased pressure will be exerted upon the diaphragm and by or through the same to the piston-head 5S and piston-rod 59, which in turn exert their pressure upon the lever 60, causing the outer end thereof to rise and the inner end 65 thereof to slightly swing 011 its pivotal connection with the rod 66. As the outer end of the lever 60 rises it lifts the support 41, thus causing the pitman 53 to rise, and thereby rock the shaft31 and lower the free end of the crank 32, which latter in turn forces the valve 33 downwardly, in the position as shown in Fig.

7 the result being that the water under pressure in the inlet-pipe 34 will flow through the openings 23 and 24 into thcvalve-chamber 8 through the inlet-pipe 34 into the outer cylinder 1, whereupon it will flow through the opening 9 into the inner cylinder 3 and, exerting its pressure 011 the piston 10, will lower the same,

thus raising the lever 17 and closing the damper 20. Again, should the pressure in the boiler decrease the pressure on the water in the chamber 43 will decrease, thus allowing the outer end of the lever 60 and the support 41 to lower, and thereby raise the valve 33 to the position shown in Fig. 8, whereupon the weight 21 will lower the lever 17 and open the damper 20, as shown in Fig. 1, said weight being suflicient to raise the piston 10, causing the water in the cylinder 3 to flow out through the opening 9 into the outer cylinder 1 and out of the latter through the pipe 7 into the valve chamber 8, from which it escapes through the openings 27 and 26 into the outlet or discharge pipe 35, the upward movement of the piston being limited by means of a pipe or collar 68 striking the top or cover of the outer cylinder 1.

The damper will remain in the position as above described until the pressure in the boiler increases beyond the desired point, when the support 41 with its attached parts will again rise and admit the water under pressure into the cylinder.

It will be evident to those skilled in the art that many changes might be made in the de tails of construction and arrangement of parts without departing from the spirit of my invention-as, for instance, it will be evident, without illustration, that instead of pivoting the inner end of the movable diaphragm-support to the cylinder 1 it might be pivoted to any other suitable and convenient stationary support. Further, as shown in Fig. 10, the support 41 might be directly connected or linked to the valve-stem, the valve-chamber Again, instead of using a rubber or flexible diaphragm 55, as above described, a piston 69 might be used, as illustrated in Fig. 11, the chamber 70, containing the same, being provided with a packing 71 to prevent the escape of water therefrom, the piston-rod 72, secured to the piston 69, supporting the lever 60, as described in the first instance.

It will also be evidentthat instead of utilizin g the device for operating a damper it might be applied to other work-as, for instance, actuating a valve, steam-jet blower, &c.

From the foregoing it will be understood that my invention is exceedingly simple in construction, certain in its operations, and, as I have found from practical tests, is very delicate and sensitive to any increase or decrease of pressure in the boiler.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a damper-regulator, the combination with a fluid-pressure motor, of a valve for governing the supply of food to the motor, a

lever pivoted to a support and adapted to actuate the valve, a second lever pivoted to the free end of said former lever and fulcrumed at its other end, and a suitably-supported motor in communication with the boiler and operatively connected with the two levers, and adapted to change their positions relatively to each other, substantially .as described.

2. 1 In a damper-regulator, the combination with a fluid-pressure motor for operating the damper, of a valve for controlling said motor, and means for operating the valve, said means consisting of two levers, one end of each being pivoted to a stationary support, and the movable end of one of the levers being pivotally connected to the movable end of the other lever, a motor in communication with the boiler and carried by one of the levers and operating against the other lever and tending to separate them, and means for with a motor for operating the damper, of a valve for controlling said motor, the pivoted support 41 provided with a water-chamber 43 communicating with the boiler, a diaphragm located in said chamber, a lever pivoted at one end to a stationary support and connected at its opposite end to said movable support, and a piston resting upon said diaphragm and against said lever for raising the latter and said movable support, when the excess of pressure in the boiler is exerted upon said diaphragm, substantially as described.

Signed at New York, in the county of New York and State of New York, this 15th day of June, A. D. 1897.

FREDERICK T. MUELLER.

Witnesses: W. M. ANDRUS, OHAs. E. RILEY. 

